Answer: $180
Step-by-step explanation: To calculate the total tip, you would add 10% to the bill,
Total bill = $159.67 x 1.10+ 175.637 or $175.64
$175.64 rounded to the nearest $10 dollars is $180 as the number in the 1s column is greater than 5. Because of this, you round up to get the nearest $10.
Total bill equals $180